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Police across Colorado are asking for the public’s help in the search for a missing 15-year-old diabetic girl who authorities believe may be involved in a crime spree and high-speed car chase that went through Weld County on Thursday night.

Breanne Gomez ran away from Eau Claire, Wisc. Monday night, the Weld County Sheriff’s Office said in a news release issued through the Colorado Bureau of Investigation.

Gomez is an insulin-dependent diabetic who requires insulin up to five times per day and may be prone to seizures if she does not take her medicine, which investigators found in an abandoned vehicle. She is Caucasian with black hair and blue eyes, is 5-feet-6-inches tall and weighs approximately 150 pounds.

Investigators believe she may be traveling with her boyfriend, identified as Spencer Linville, 16, who is also from Wisconsin. Two other teens are also believed to be traveling with the couple, but it is unknown what specific roles anyone has had in the incident or to what degree they know each other.

Authorities from Morgan and Washington counties began chasing a Buick Thursday night when the car sped away after being pulled over for speeding in Washington County. The driver of the Buick — which was later discovered as stolen from Wisconsin — led police on a chase that at times hit speeds of 100 mph, and at one point sent the car airborne off of a road near Interstate 76. It later crawled back onto the highway and continued to evade police, according to a news release.

The car and its occupants got away before Weld County deputies could deploy tire-deflating tools. Later that evening, deputies found the abandoned Buick after responding to reports of a stolen blue Chrysler Town and Country minivan from Roggen, a small community located along Interstate 76 about 30 miles west of Fort Morgan.

The minivan has Colorado license plate 876-WZS, authorities said. The teenagers’ location is currently unknown, but they may be on their way to California — possibly the Riverside area.

Anyone with information is asked to immediately contact their local law enforcement agency or the Weld County Sheriff’s Office at (970) 356-4015.